Iridium Oxide - High Surface Area

Proton exchange membrane (PEM) electrolyzer devices and applications need high surface area and high performance oxygen evolution reaction (OER) electrocatalysts in order to operate efficiently or have lower power consumption during their operation.  Iridium oxide nanopowder manufactured by FuelCellsEtc has the following properties:

High BET surface area: ~110-130 m2/gram,

Nanopowder form for small particle size: Average crystallite size of 3-4 nanometers,

High electrical conductivity,

Superior OER performance compared to other IrO2 (or IrOx) products in the market,

Commercially pure IrOx composition

Long operational lifetime: >20,000 hours under standard PEM electrolysis operating conditions

Catalyst Properties


Metal Surface Area
10-20 m2/g

Crystallite Size
6-10 nm